<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form action="http://localhost:8080/07_servlet/ps" method="post">
        账户：<input type="text" name="username" ><br/>
        密码：<input type="password" name="password" ><br/>
        兴趣：<input type="checkbox" name="hobby"  value="c++">c++
        <input type="checkbox" name="hobby" value="java">java
        <input type="checkbox" name="hobby" value="js">js
        <br/>
        <input type="submit" value="提交">
    </form>
</body>
</html>